In a new video mash-up, a spandex-heavy Jazzercise class dances it out to Swift's "Shake It Off." And, no real surprise, this song helps a person work up a serious sweat.

Swift was even in on the joke, tweeting a link to the video with the explanation, "A sneak peak at the official 'Shake It Off' choreography for the 1989 World Tour."

Swift has no plans to follow in Richard Simmons' footsteps and take over the Sweatin' to the Oldies franchise (at least, not as far as we know), but she is helping to boost our relations with Japan.

In a post to Instagram, Swift showed herself dancing to a very different version of "Shake It Off" accompanied by a koto and bamboo flute, captioning it, "You've got to fight for your right to PARTY."